Deerwester, Isaac
Current rating: 1421
Record: 48-53-3
Grand Prix Atlantic City 2015Grand Prix Dallas-Fort Worth 2015Grand Prix New York 2016Grand Prix Pittsburgh 2016Grand Prix Pittsburgh 2017Grand Prix New Jersey 2017 (std)Grand Prix Richmond 2017Grand Prix Toronto 2017Grand Prix Washington DC 2017Grand Prix New Jersey 2017 (lim)Grand Prix New Jersey 2019
| Grand Prix New Jersey 2019 (RNA limited) | starting rating: 1473 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 267 | Blesso, Marc (1678) | Lost 0-2 | -141459 |
| 2sealed | 461 | Schirling, Heather (1431) | Draw 1-1 | -11458 |
| 3sealed | 592 | Shapiro, Andy (1481) | Won 2-1 | +181476 |
| 4sealed | 475 | Garrido, Bryant (1499) | Lost 1-2 | -171459 |
| 5sealed | 536 | Crittenden, Brandon (1464) | Lost 1-2 | -181441 |
| 6sealed | 487 | Black, Rebecca (1436) | Lost 0-2 | -181423 |
| 7sealed | 246 | DeVault, Michael (1444) | Lost 0-2 | -181405 |
| 8sealed | 329 | Battis, John (1300) | Won 2-1 | +161421 |
| top | average opponent: 1467record: 2-5-1 | new rating: 1421 | ||
| Grand Prix New Jersey 2017 (lim) (XLN limited) | starting rating: 1517 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 80 | Kovalcik, JR (1396) | Lost 1-2 | -201497 |
| 3sealed | 398 | Shvartsman, Adam (1394) | Won 2-0 | +161513 |
| 4sealed | 330 | Dia, Roger (1482) | Won 2-1 | +171530 |
| 5sealed | 77 | McConnell II, Esker (1182) | Lost 0-2 | -241506 |
| 6sealed | 330 | Hedman, Jessie (1605) | Won 2-0 | +201526 |
| 7sealed | 120 | Cox, Patrick (1640) | Lost 0-2 | -161510 |
| 8sealed | 285 | Soderlund, Andrew (1493) | Lost 1-2 | -181492 |
| 9sealed | 247 | Doherty, Shawn (1446) | Lost 0-2 | -191473 |
| top | average opponent: 1455record: 3-5 | new rating: 1473 | ||
| Grand Prix Washington DC 2017 (HOU standard) | starting rating: 1548 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 40 | Molina, Mario (1618) | Lost 1-2 | -171531 |
| 3standard | 477 | Midgett, Thomas (1501) | Won 2-1 | +171548 |
| 4standard | 270 | Hare, Ryan (1850) | Lost 1-2 | -121536 |
| 5standard | 590 | Staley, Chase (1500) | Won 2-1 | +171553 |
| 6standard | 287 | Yannopoulos, Elias (1471) | Won 2-1 | +171570 |
| 7standard | 260 | D'Anjou, Dan (1574) | Lost 1-2 | -181552 |
| 8standard | 358 | Scalzo, Anthony (1717) | Lost 0-2 | -151537 |
| 9standard | 373 | Tyson, Thomas (1438) | Lost 1-2 | -201517 |
| top | average opponent: 1584record: 3-5 | new rating: 1517 | ||
| Grand Prix Toronto 2017 (HOU limited) | starting rating: 1587 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 133 | Rowe, Jonathan (1979) | Lost 0-2 | -121575 |
| 3sealed | 308 | Legault, Antonin (1374) | Won 2-0 | +151590 |
| 4sealed | 388 | Casselman, Jeffrey (1501) | Lost 1-2 | -201570 |
| 5sealed | 389 | Gelinas-Proulx, Adam (1489) | Lost 0-2 | -191551 |
| 6sealed | 445 | Caswell, Michael (1484) | Won 2-0 | +161567 |
| 7sealed | 415 | Bloss, Lucas (1497) | Won 2-0 | +171584 |
| 8sealed | 254 | Nichols, Peden (1615) | Lost 0-2 | -171567 |
| 9sealed | 292 | Tucker, Ryan (1511) | Lost 0-2 | -191548 |
| top | average opponent: 1556record: 3-5 | new rating: 1548 | ||
| Grand Prix Richmond 2017 (AKH limited) | starting rating: 1597 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 288 | Smith, Alexander B (1538) | Lost 0-2 | -191578 |
| 4sealed | 401 | Scott, Michael (1622) | Lost 0-2 | -171561 |
| 5sealed | 495 | Doshi, Vivek (1618) | Won 2-0 | +191580 |
| 6sealed | 331 | Bartley, Matthew (1850) | Won 2-1 | +231603 |
| 7sealed | 303 | Halmagyi, Joshua (1477) | Lost 1-2 | -201583 |
| 8sealed | 427 | Li, Phillip (1700) | Lost 0-2 | -161567 |
| 9sealed | 359 | Saxe, Ryan (1660) | Won 2-1 | +201587 |
| top | average opponent: 1638record: 3-4 | new rating: 1587 | ||
| Grand Prix New Jersey 2017 (std) (AER standard) | starting rating: 1535 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 155 | Mullen, Collins (1630) | Lost 1-2 | -161519 |
| 4standard | 332 | Sandrin, Ryan (1671) | Lost 1-2 | -151504 |
| 5standard | 481 | Cendali, Armando (1501) | Won 2-0 | +181522 |
| 6standard | 432 | Schaeffer, Todd (1523) | Lost 1-2 | -181504 |
| 7standard | 482 | Yu, Ming (1427) | Won 2-1 | +161520 |
| 8standard | 285 | Wright, Christopher (1516) | Won 2-0 | +181538 |
| 9standard | 321 | Hubbard, Christopher (1482) | Won 2-0 | +171555 |
| 10standard | 166 | Rightmyer, Rory (1611) | Won 2-1 | +191574 |
| 11standard | 177 | Heine, Jack (1603) | Won 2-1 | +191593 |
| 12standard | 98 | Grezes, Felix (1711) | Lost 0-2 | -161577 |
| 13standard | 140 | Kanner, Zack (1614) | Won 2-0 | +191596 |
| 14standard | 70 | O'Sullivan, Connor (1629) | Won 2-0 | +181614 |
| 15standard | 77 | Ostroski, Michael (1688) | Lost 0-2 | -171597 |
| top | average opponent: 1585record: 8-5 | new rating: 1597 | ||
| Grand Prix Pittsburgh 2017 (AER standard) | starting rating: 1594 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 320 | Doyle, Patrick (1477) | Lost 0-2 | -201574 |
| 4standard | 254 | Zhu, Zimu (1523) | Won 2-0 | +171591 |
| 5standard | 19 | Moran, Joshua (1516) | Lost 1-2 | -201571 |
| 6standard | 315 | Martenco, AJ (1506) | Won 2-0 | +171588 |
| 7standard | 223 | Desposito, Nicolas (1468) | Lost 1-2 | -201568 |
| 8standard | 261 | Larter, Brian (1631) | Won 2-0 | +191587 |
| 9standard | 205 | Semeyn, Jonathan (1513) | Won 2-0 | +171604 |
| 10standard | 697 | Scott, Matt (1677) | Lost 0-2 | -171587 |
| 11standard | 705 | Frederick, Jacob (1700) | Won 2-1 | +201607 |
| 12standard | 689 | Lambaria, Joslyn (1672) | Lost 1-2 | -171590 |
| 13standard | 687 | Yao, Zile (1543) | Lost 1-2 | -191571 |
| 14standard | 692 | Sauer, John (1564) | Lost 0-2 | -181553 |
| 15standard | 686 | Malinowski, Mike (1550) | Lost 0-2 | -181535 |
| top | average opponent: 1565record: 5-8 | new rating: 1535 | ||
| Grand Prix Pittsburgh 2016 (SOI standard) | starting rating: 1617 | |||
| round | table | opponent (rating) | result | Δrating |
| 3standard | 336 | Porter, Donald (1573) | Won 2-0 | +171634 |
| 4standard | 130 | Tautic, Raymond (1764) | Lost 1-2 | -151619 |
| 5standard | 276 | Brown, David (1491) | Won 2-1 | +151634 |
| 6standard | 93 | Lehman, Michael (1571) | Draw 1-1 | -11633 |
| 7standard | 123 | Leventhal, Jackson (1558) | Lost 1-2 | -191614 |
| 8standard | 216 | Darlow, Kyle (1572) | Lost 1-2 | -191595 |
| 9standard | 292 | Barfoth, Elijah (1520) | Draw 1-1 | -11594 |
| top | average opponent: 1578record: 2-3-2 | new rating: 1594 | ||
| Grand Prix New York 2016 (SOI standard) | starting rating: 1573 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 412 | Ma, Jesse (1582) | Won 2-1 | +181591 |
| 3standard | 465 | Stephan, Ben (1520) | Lost 1-2 | -191572 |
| 4standard | 554 | [anonymous] | Won 2-0 | +181590 |
| 5standard | 369 | Myrianthopoulos, Marley (1540) | Won 2-0 | +171607 |
| 6standard | 72 | Perlee, Travis (1683) | Won 2-0 | +191626 |
| 7standard | 147 | Cohen, Justin (1967) | Lost 0-2 | -121614 |
| 8standard | 226 | Wojcak, Wade (1517) | Lost 0-2 | -191595 |
| 9standard | 332 | McGlynn, Jason P (1540) | Won 2-0 | +171612 |
| 10standard | 288 | Plante, Nathan (1544) | Lost 1-2 | -201592 |
| 11standard | 237 | Brousseau, Jesse (1538) | Won 2-0 | +171609 |
| 12standard | 217 | Donato, Marino (1665) | Won 2-1 | +191628 |
| 13standard | 150 | Hare, Ryan (1766) | Lost 0-2 | -151613 |
| 14standard | 175 | Boone, Evan (1566) | Won 2-1 | +171630 |
| 15standard | 139 | Cox, Patrick (1915) | Lost 1-2 | -131617 |
| top | average opponent: 1638record: 8-6 | new rating: 1617 | ||
| Grand Prix Dallas-Fort Worth 2015 (ORI limited) | starting rating: 1525 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 545 | Sprague, Lexi (1500) | Won 2-0 | +181543 |
| 2sealed | 352 | Mantzaris, Dylan (1481) | Lost 1-2 | -201523 |
| 3sealed | 558 | Johnson, Joe (1499) | Lost 1-2 | -181505 |
| 4sealed | 690 | Porreca, Stephen (1452) | Won 2-0 | +171522 |
| 5sealed | 470 | Russell, Ronnie (1471) | Won 2-0 | +171539 |
| 6sealed | 401 | Rylands, Jeremy (1521) | Won 2-1 | +181557 |
| 7sealed | 172 | Patel, Karttik (1473) | Lost 0-2 | -201537 |
| 8sealed | 248 | Karns, Tristan (1489) | Won 2-0 | +171554 |
| 9sealed | 171 | Tindol, Cole (1567) | Won 2-0 | +191573 |
| top | average opponent: 1495record: 6-3 | new rating: 1573 | ||
| Grand Prix Atlantic City 2015 (DTK limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 253 | Reed, Steven (1499) | Lost 0-2 | -181482 |
| 2sealed | 410 | Boyer, Billy (1294) | Won 2-0 | +151497 |
| 3sealed | 602 | Cooper, Russell (1564) | Lost 0-2 | -171480 |
| 4sealed | 627 | Jort, Elias (1505) | Won 2-0 | +181498 |
| 5sealed | 526 | Hobler, Seneca (1837) | Won 2-0 | +241522 |
| 6sealed | 289 | Karman, David (1579) | Lost 0-2 | -171505 |
| 7sealed | 392 | Feder, Evan (1502) | Won 2-0 | +181523 |
| 8sealed | 288 | Kwan, Philip (1620) | Lost 0-2 | -161507 |
| 9sealed | 227 | Roddy, Joseph (1511) | Won 2-0 | +181525 |
| top | average opponent: 1546record: 5-4 | new rating: 1525 | ||